Motion of interacting particles in a vortical hydrodynamic field

The theoretical model of the two-dimensional motion of interacting foreign particles in a vortical hydrodynamic field is presented. A spherical particle of a given mass is located on the fixed circular orbit in the hydrodynamic field of a swirling flow, where the centrifugal force is compensated by the radial drag force due to the sink. It is shown that the presence of attractive and repulsive forces between foreign particles leads to the creation of different cluster structures of particles. The analysis of the clusterization is performed on the basis of Molecular Dynamics simulations.